I ran an EVGA board for years, but finally tried an Asus ROG Strix Z270i for latest build.  I do still use an EVGA 1080 and PSU.  I noticed it's difficult to find any owners threads on this board, but I have a feeling some things may be similar with the stinger version.
 
I noticed when I setup my board it had a blue remove tab with the brand name "Laird" sticking out of the PCH.  I pulled it out, but along came some sort of thermal pad (sticky foamy thing).  I believe that is what it is as I opened up the PCH and saw the rest of it.  This is also a spot for an m.2 SSD, which I now have in there, along with the pad broken in half lol.  Anyways, I notice temps on this piece to be 60-70 with light loads.  I know 125+ is the termal limit, but it is still quite above what I'd expect and was wondering if the stinger was setup the same way, and if anyone has run into the same issue, or has any suggestions for fixing this.  

Is the board easily Accessible? If so, i would remove the heat sink and just verify.

Usually the pch has thermal grease, not a thermal pad when using evga boards. If you have spare thermal paste, it wouldnt hurt to check.

 
The thermal pad should be there to cool the m.2

Cool GTX
Moving to General Hardware as this is an Asus Z270 MB

The op has z270 stinger in the title. The first post mentions an asus board, and the last person to post, posted an asus board. I am so confused. Which is it. An asus board or a z270 stinger evga board?

the heatsink is for the z270 chip and the m.2 slot, the blue film is there to protect the thermal pad until you use it, kinda like the film the put on plastic. you will need to dis-assemble the double decker heatsink and replace the thermal pad. kinda of a hokey design imo